A CMOS K-winners-take-all circuit with O(n) complexity

Sekerkiran, B.; Cilingiroglu, U.

doi:10.1109/82.749038

Cited by 37 publications

(12 citation statements)

References 4 publications

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“…Not only digital kWTA circuits but also most of analog kWTA circuits [11][12][13] have O(N) time complexity. Although it has been considered that the analog kWTA implementation is faster than its digital counterparts, the proposed kWTA architecture is much faster than its analog counterparts.…”

Section: Methodsmentioning

confidence: 99%

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A Parallel Search Algorithm and Its Implementation for Digital k-Winners-Take-All Circuit

Yoon¹

2015

JSTS:Journal of Semiconductor Technology and Science

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Section: Methodsmentioning

confidence: 99%

“…While many analog kWTA circuits [11][12][13] have been designed, digital kWTA circuits have been relatively less researched than their analog counterparts. The analog kWTA implementation requires less hardware than the digital implementation, and can find k-winners by comparing all inputs simultaneously.…”

Section: Introductionmentioning

confidence: 99%

A Parallel Search Algorithm and Its Implementation for Digital k-Winners-Take-All Circuit

Yoon¹

2015

JSTS:Journal of Semiconductor Technology and Science

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“…Various CMOS analog WTA (or losertakes-all, LTA) circuits with voltage inputs were proposed for various specifications such as various speed, precision, and supply voltage [21][22][23][24][25][26][27]. CMOS k-WTA circuits were introduced by Sekerkiran in 1999 [24] and Hung in 2002 [26]. In [25], Hung and Liu proposed a high-stable WTA/LTA circuit which operation is independent of process variation.…”

Section: Introductionmentioning

confidence: 99%

“…A scalable current-mode WTAs realized in BJT and CMOS circuits for large-scale applications were proposed by Smedley [19,20]. Various CMOS analog WTA (or losertakes-all, LTA) circuits with voltage inputs were proposed for various specifications such as various speed, precision, and supply voltage [21][22][23][24][25][26][27]. CMOS k-WTA circuits were introduced by Sekerkiran in 1999 [24] and Hung in 2002 [26].…”

Section: Introductionmentioning

confidence: 99%

1-V bulk-driven CMOS analog programmable winner-takes-all circuit

Hung

Liu

Tsai

2006

Analog Integr Circ Sig Process

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In this paper, a 1-V bulk-driven analog winnertakes-all circuit with programmable k-winners capability is proposed. By presetting a set of binary bits, the desired k-winners-take-all or k-losers-take-all function is programmable. The proposed upward-and-downward searching greatly improves the response time. The chip has been fabricated with a 0.25-µm CMOS technology. Simulated results show that the response time of the winner-takes-all circuit is 50 µs under 5-mV identified resolution. The input range is approximately to be rail-to-rail.

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“…Secondly, there are also several signal processing systems depending on the application. For instance, signal processing such as K-winners-take-all, are suitable for 3D vision systems [53][54][55][56][57][58] and subpixel accuracy [59][60][61][62][63][64][65]. Smoothing [66], motion detection [67][68][69], programmable amplification, multiresolution imaging [70], video compression [71], dynamic range enhancement, discrete cosine transform (DCT), intensity sorting, etc.…”

Section: Analog Signal Processingmentioning

confidence: 99%

Review of CMOS image sensors

Bigas

Cabruja

Salví

2006

Microelectronics Journal

497

230

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The role of CMOS Image Sensors since their birth around the 1960s, has been changing a lot. Unlike the past, current CMOS Image Sensors are becoming competitive with regard to Charged Couple Device (CCD) technology. They offer many advantages with respect to CCD, such as lower power consumption, lower voltage operation, on-chip functionality and lower cost. Nevertheless, they are still too noisy and less sensitive than CCDs.Noise and sensitivity are the key-factors to compete with industrial and scientific CCDs. It must be pointed out also that there are several kinds of CMOS Image sensors, each of them to satisfy the huge demand in different areas, such as Digital photography, industrial vision, medical and space applications, electrostatic sensing, automotive, instrumentation and 3D vision systems.In the wake of that, a lot of research has been carried out, focusing on problems to be solved such as sensitivity, noise, power consumption, voltage operation, speed imaging and dynamic range. In this paper, CMOS Image Sensors are reviewed, providing information on the latest advances achieved, their applications, the new challenges and their limitations. In conclusion, the State-of-the-art of CMOS Image Sensors. q

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A CMOS K-winners-take-all circuit with O(n) complexity

Cited by 37 publications

References 4 publications

A Parallel Search Algorithm and Its Implementation for Digital k-Winners-Take-All Circuit

A Parallel Search Algorithm and Its Implementation for Digital k-Winners-Take-All Circuit

1-V bulk-driven CMOS analog programmable winner-takes-all circuit

Review of CMOS image sensors

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